Trolley device.



J. H. FINCH, JR. TROLLEY DEVICE.

APPLICATION IILED DEC. 28, 1910.

Patented Nov. 21, 1911.

ITED STATES PATENT UFFIE JAMES H. FINCH, JR., 013 WEST ROXBURY, MASSACHUSETTS.

TROLLEY DEVICE.

To all whom it may concern:

Be it known that I, JAMES H. FINoH, Jr., a citizen of the United States, residing at WVest Roxbury, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Trolley Devices; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in. the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

This invention relates to new and useful improvements in devices for preventing trolley wheels leaving line Wires and the object in view is to produce a simple and efficient device of this nature having various details of construction and combinations and arrangements of parts which will be hereinafter fully described and then specifically defined in the appended claims.

I illustrate my invention in the accompanying drawings, in which Figure 1 is a perspective view of my improved trolley wheel. Fig. 2 is a sectional view. Fig. 3 is a detail perspective view showing the tube with a cam slot therein. Fig. 4 is a detail view of the plug removed and Fig. 5 is an elevation of the lower portion of the harp.

Reference now being had to the details of the drawings by letter, A designates a tubular shell which in the present instance is shown as being right angular and is provided with oppositely disposed V-shaped cam slots A. Movable within said shell is a plug B having a threaded cap B fitted to one end, which cap has a shouldered portion G designed to contact with the end of the tubular shell, said cap being of slightly larger diameter than the shell A. Threaded lugs D, havingfiattened portions, project from the shank portion of said plugat points diametrically opposite and one is positioned in each of said cam slots. A harp designated by letter E, has a cylindrical shank portion with slots E formed in the end thereof at positions diametrically opposite and adapted to receive said lugs and hold the same and the plug from turning as a partial rotary movement might be imparted to the shell incident to the trolley wheel going about a curve or any tendency to cause Specification of Letters Patent.

Application filed December 28, 1910.

Patented Nov. 21, 1911. Serial No. 599,699.

the shell to turn. The slotted end of the shank portion of the harp is circumferentially threaded as at F, and G designates a nut which has interior threads H which terminate in a shoulder H, said shoulder being adapted to fit close to the circumference of the shell whichpasses through the aperture in the nut.

The interior diameter of the shank portion of the harp is adapted to receive the cap and tubular shell A which telescope within the same, said cap forming a closure to prevent foreign matter passing down through the shank portion of the harp. It will be noted that, when the parts are adjusted in shown and described and, in the event of there being a tendency to impart a rotary movement to the slotted tubular shell, the inclined cam edges of the slots coming against the pins which project from the plug will cause a longitudinal movement to be imparted to the plug and also to the harp carrying the wheel whether the rotary movement be in one direction or the other.

From the foregoing, it will be noted that the harp will serve the purpose as a cover to the working parts and, being slotted, will prevent the threaded lugs from loosening and coming out, the harp also serving as a means for holding the wheel. By the provision of the cap mounted in the end of the plug, dust and foreign matter generally will be prevented from entering the shank portion of the harp. By the provision of the square nut fitted to the end of the shank portion of the harp, a safe guard means against the whole top lifting or springing will be prevented.

When the device is attached to a car, the weight of the device will be sufficient to carry out the desired effects in its operation but this action may be made more positive by the upward bearing caused by the usual springs which are attached to the pole and trolley upon the roof of a car.

It will be noted that, by the provision of the device shown, all springs in connection with the trolley wheel and adjacent parts are eliminated which are objectionable for use in cold weather when ice and snow are apt to render devices of this nature useless.

What I claim to be new is 1. A trolley device comprising a tubular shell adapted to be attached to a trolley pole and provided with cam slots, a plug movable within said shell and having lugs projecting therefrom through said slots, a trolley wheel harp in which said tubular shell telescopes, the circumference of said harp having threads thereon, a nut engaging said threads below said lugs and designed to hold the shell within the harp.

2. A trolley device comprising a tubularshell adapted to be attached to a trolley pole and provided with cam slots, a plug movable within said shell and having lugs projecting therefrom through said slots, a trolley wheel harp having a hollow shank portion in which said tubular shell telescopes, said shank portion of the harp having oppositely disposed slots engaged by said lugs, and a threaded nut fitted to the shank below the lugs and adapted to hold the tubular shell therein.

3. A trolley device comprising a tubular shell adapted to be attached to a trolley pole and provided with cam slots, a rotatable plug telescoping within said shell, lugs projecting from the plug and engaging said slots, a cap fitted to the end of the plug, a harp having a hollow shank portion circumferentially threaded and provided with oppositely disposed slots at one end thereof, said shell and cap telescoping within said shank portion of the harp and said lugs engaging the slots in the harp to prevent the same from rotation, and a nut engaging the threaded portion of the shell below said lugs.

4. A trolley device comprising a tubular shell adapted to be attached to a trolley pole and provided with cam slots, a rotatable plug telescoping within said shell, lugs projecting from the plug and engaging said slots, a cap fitted to the end of the plug, a trolley pole harp having a hollow shank portion with circumferential threads thereon and with oppositely disposed slots in one end thereof, said shell and cap telescoping within said shank portion of the harp, said lugs engaging said slots in the shank to prevent the same from rotation, the end of the shank portion of the harp being circumferentially threaded, a nut movable upon the shell and engaging the threaded portion of the shank below said lugs.

5. A trolley device comprising a tubular shell adapted to be attached to a trolley pole and provided with cam slots, a rotatable plug telescoping within said shell, said plug having diametrically opposite threaded holes, a threaded lug fitted in each of said holes and having flattenedv portions, said lugs extending through and designed to have play in said cam slots, a cap fitted to the plug, a harp having a shank portion with circumferential threads thereon and with diametrically opposite slots in the end, said shell telescoping within the shank portion of the harp and said lugs engaging said slots in the harp, a nut having a shouldered portion in the end of its interiorly threaded part, said threaded part engaging said threads below said lugs.

6. A trolley device comprising a tubular shell adapted to be attached to a trolley pole and provided with cam slots, a rotatable plug telescoping within said shell, said plug having diametrically opposite threaded holes, a threaded lug fitted in each of said holes and having flattened portions, said lugs extending through and designed to have play in said cam slots, said plug having an interiorly threaded opening, a cap with a threaded shank portion engaging said hole, the diameter of the end of the cap slightly larger than the diameter of the shell, a harp having a hollow shank portion which is circumferentially threaded and slotted to receive said lugs, and a square nut fitted to the threaded portion of the harp below said lugs.

In testimony whereof I hereunto afiix my signature in the presence of two witnesses.

JAMES H. FINCH, JR.

\Vitnesses:

. WILLIAM JONES,

WVALTER GOODMAN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

